Front-end multi-channel PMT-associated readout chip for hodoscope application

H. Mathez (1) , D. Dauvergne (2) , Y. Zoccarato (1) , Guo-Neng Lu (3) , Shiming Deng (4)

1 électronique
2 CAS-PHABIO
3 INL - CSH - INL - Conception de Systèmes Hétérogènes
4 IPNL - Institut de Physique Nucléaire de Lyon

The system development requires a dedicated multi-channel readout ASIC (Application Specific Integrated Circuit) to be associated with the MaPMTs. Each channel should have very low input impedance to avoid electrical crosstalk between adjacent channels and to minimize effects of detector and wiring capacitances (Cd + Cw). Crosstalk between channels may degrade position resolution, while these capacitances may degrade both frequency and noise performances. Each channel should also provide two separated outputs corresponding respectively to high-speed signal-event detection and low-noise signal-charge quantification at low counting rate. This paper presents a readout chip for this purpose. It has been designed in a 0.35µm SiGe BiCMOS process (AMS). This process allows the use of RF and large-transconductance bipolar components, which is useful for the design of wide-band, low-impedance and low-noise circuits with improved performances.

Mots clés: ASIC; photomultiplier; charge sensitive amplifier; current conveyor

Domaines: Micro et nanotechnologies/Microélectronique

H. Mathez, D. Dauvergne, Y. Zoccarato, Guo-Neng Lu, Shiming Deng. Front-end multi-channel PMT-associated readout chip for hodoscope application. 6th International Conference on New Developments in Photodetection (NDIP 2011), 2011, Lyon, France. pp.390-393, ⟨10.1016/j.nima.2011.11.042⟩. ⟨in2p3-00649655⟩